Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Impact cutoff

Active Publication Date: 2017-04-06
THE NAT MASCH CO
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention is a device that reduces vibration and fatigue failure in a cutting machine by using a low mass cutter carriage, a torsion spring for carriage return, and an articulated drive block on a pivoting lever. This ensures accurate and quality cutoff.

Problems solved by technology

These features reduce impact induced vibration otherwise leading to fatigue failure and wear of the various cutter parts and consequent loss of cutoff accuracy and quality.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Impact cutoff
  • Impact cutoff
  • Impact cutoff

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014]A progressive cold forming machine is schematically illustrated at 10 in FIG. 1. For clarity, only a few selected components of the machine 10 are illustrated. A series of die stations 11 of a bolster 12 are evenly spaced in a horizontal array. A ram or slide, not shown, reciprocates towards and away from the bolster while carrying a horizontal array of punches or tools on centers corresponding to the die stations 11. As is customary, a transfer device (not shown) transfers a blank from one die station 11 to a successive one as the blank is progressively formed into a finished or nearly finished part. A cutoff device 13 of the invention is adjacent a first one of the die stations 11. The cutoff device 13 receives round wire and shears it into separate blanks of uniform length. The transfer device in a known manner picks up a sheared blank and moves it to the first die station. With reference to FIGS. 6-8, the cutoff device 13 includes a cutter pack or cartridge 14. The cutter ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Speedaaaaaaaaaa
Forceaaaaaaaaaa
Login to View More

Abstract

An impact cutoff device for a progressive high speed cold former having a low mass rigid cutter carriage, a torsion spring for carriage return, and an articulated, oil lubricated and dampened carriage drive block on a pivoting drive lever serving to reduce impact induced vibration otherwise leading to fatigue failure and wear of the various cutter parts and consequent loss of cutoff accuracy and quality.

Description

BACKGROUND OF THE INVENTION[0001]The invention relates to blank cutoff apparatus for progressive cold forming machines.PRIOR ART[0002]For cutting wire and bar stock, it is common to use enclosed circular sleeves as cutter blades, one movable with a cutter carriage (cutter) and the other fixed (quill). Reducing the diametrical clearance in the cutter blades is known to improve the quality of cutoff as well as to maintain control of the blank after it has been sheared.[0003]With minimal clearance between the cutting or shearing blades and the wire, and because the wire shears at the very beginning of the shearing motion, there is minimal distance for a cutter carriage to accelerate to a significant velocity. Thus, most high velocity cutter mechanisms accelerate a driving member to the desired velocity prior to engaging the cutter carriage.[0004]Prior art impact blank cutoff devices have often been complicated, have required a high level of maintenance, and have exhibited early wear.SU...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B23D23/00B26D5/16B21K27/06
CPCB23D23/00B26D5/16B21K27/06B21D28/14B21F11/00B26D3/16B23D15/04B23D15/12B23D35/001B21D43/28
Inventor HALL, AARON T.
Owner THE NAT MASCH CO
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com